Check the listing for details. 2.5" Liquid Filled Pressure Gauge 0-7500 PSI 1/4" NPT CBM Panel Flush Mount. Color: Silver, Condition: New. Listed at 29.95 USD. Brand-new high-quality liquid filled air pressure gauge with an integrated panel mount. This gauge has a glycerin filling that helps dampen the effects of pulsation and vibration, while also perpetually lubricating the movement and keeping contaminates such as dirt away from all moving parts, which will extend the life of the gauge. This gauge also has a pressure relief vent on the top to release any pressure built up in the liquid from vibration. This gauge is perfect for those looking to flush mount a high-quality gauge to a panel. This gauge reads every 1000 PSI with tick marks every 100 PSI. BAR readings from 0-500.Brand-new high-quality liquid filled air pressure gauge with an integrated panel mount. This gauge has a glycerin filling that helps dampen the effects of pulsation and vibration, while also perpetually lubricating the movement and keeping contaminates such as dirt away from all moving parts, which will extend the life of the gauge. This gauge also has a pressure relief vent on the top to release any pressure built up in the liquid from vibration. This gauge is perfect for those looking to flush mount a high-quality gauge to a panel. This gauge reads every 1000 PSI with tick marks every 100 PSI. BAR readings from 0-500.